Cylinder connection tips

[GrahamT]

Hi all

Anyone got a good tip for sealing the copper-iron unions on copper cylinders?

I usually use PTFE on the threads, and immersion washer+compound on the immersion/blanking plate, but have had the odd weep just as the whole system gets to maximum head!

I've now started doubling-up with a wipe of LSX around the joints.

Any best-practice suggestions very much appreciated.

Graham

 

[namsag]

Iron to copper PING GUSH SPLASH

 

[GrahamT]

Iron to copper PING GUSH SPLASH

Hmmm, that's helpful

 

[namsag]

Don`t use iron fittings on a cylinder in 3 years time when they have rotted from the inside out they go ping as they suddenly fall apart not a gradual leak followed by 100 litres plus off water through the ceiling if its on cold feed

 

[GrahamT]

sorry, I was being lazy in my language. I meant the usual male/female compression couplers - I guess they're brass

 

[2face]

i ptfe the copper faces.. usually fine .. dont over tighten but most important leave the fittings accesible

 

[Softus]

I usually use PTFE on the threads, and immersion washer+compound on the immersion/blanking plate, but have had the odd weep just as the whole system gets to maximum head!

I've now started doubling-up with a wipe of LSX around the joints.

Me too, and for the same reasons I suspect.

Most cylinder bosses are a pain in the a*se, I think because of the lack of care taken in manufacture.

Recently a pair of us were replacing a cylinder connected in a mish-mash of 24mm and 28mm pipework, and the only cylinder without a huge wait had 1 1/4" tappings. The secondary boss was so poorly tapped that no MI fitting would go all in the way in. We ended up leaving it sticking out until the cylinder heated up and expanded, and then screwing it home with LSX to boot. The b*stard thing still leaked of course, but only at a "self-healing" rate.

 

[Paul Barker]

Yes I wrecked a bottom immersion of a combi made a loss of £150 on that job and took me a full day to do so as I had many attenpts at saving it. Just had to go and buy another in the end.

The manufacturers make them then spray the foam where you don't need it, then they get two mallets and oval all the 1" male connections betweent eh mallets, then they play roll the cylinder round the factory roof and for the finale drop it into the loading bay.

I put jet blue on the faces of the cylinder unions and jet blue on the immersion gasket. Say a prayer before during and after assembling ever single joint most gingerly, and always put a drain off in.